Grinding attachment for cloth-cutters and the like.



F. B. WILDMAN & E. W. BORTMAN. GRINDING ATTACHMENT FOR CLOTH OUTTERS AND THE LIKE.

APPLICATION FILED AUG.1 7, 1911.

1,050,891, v Patented Ja11.21,1913.

ELI/6735576 mailer gi To ZZ when it may concern of so 2 y to illustr'atefionr nvention in relation therenssrsrronsvro wit-omen MFG. COMPANY, or nonn-rsrown, rnnusrnvnmef y enrnlnrno ATTACHMEIET iron cLofrn-cu'rriins enmrein LIKES;

- Be known thatiwe, FRANK andfjE'iunnUnnlN. 'BORTMAN, citizens of the United. steltcsg residing at Norristown, Pennsylv ani a hare'inyentcd certainnew and use ful flmproyementsin Grinding Attachments for Cloth-Cutters and the Like, of which the a'specification. g on reletes to grinding applifor thecdtters of cloth cutting Inaarm chi

the grinding devi' ce is attached to the frame of thjefniaehineand is adapted to be thrown intoposi'tion to do'its work, or to be adjrustedvt-oa position to one side'of the cutter at th' will of the operator.

consists in the features: and and arrangement of parts hereihed and particularly pointed To in figs Figure 1 is a plan View on; of'a cloth cutter as is necessary tinting the attachment a'dg ding-members thrown into engagementwi th the knife, and illustratingin dotted "rises the i'position of the attachment when adjusted e tir'ely out of operative position to one-side: of the knife. Fig. 2 is a similarwyiew to Fig. 1', with one of the grinding members in contact with the knife and showing indotted lines the adjustment oi th attachment for bringing the other grindin; member against the other edge of the knife. Fig. 3 is a front View of the parts in the position of Fig. 1.

In these drawin s '1 indicates a art oi the frarneof a cloth cutting machine, 2 the cutting knife, which in this case is in the form of a disk mounted to rotate and driven in any suitable manner, known in the art, to perform its cutting operation. The grinding attachment comprises a bracket 3 rigidly.

B. WILL-MAN to that class in which 0 F' si. on ready to have either of K B. :WILDMAN Ann manhunt W. nonrivreu, or nonnrsrcwn, rnnnsrnvnnte,

Specification of Letters 'Fatent. Patented. Jan. 21,1913. Application filed August 17,1911. Serial 1%. 644,851.

at its lower fixed-thereto, across piece ,1

11 through slots in which'stnds l2 pessfihese,

studs forn'iing the joiirniilsof the grinding Wheels 13. The studs ere'edjustahly mounted in the slots to Vary the position otthe grinding Wheels in relation to each other.

The Whole trahih or bracket 6 may,

swung on the stud E3 to carry the grinding, I

wheels to and from ao'i jion fin 'relstionyto T55 the cutter and for holding j-the" frame either one of its positions, thellower arm thereof is provided with 'fii shaped prfijcc,

tions 14, at diametricellyfopposite sides of its journal or hearing openingg-thesejv shaped pro ections beingedePted toQenteifl 11,1 9

notch 15 in the fixed bracket 3', thefi'ametif being pressed normally upwardby efspring 16 encircling the journalpostor .studfi. ,In

order to swing the franieor bracket 1-6 from; the position shown in dottedlinesin Fi '1 to that shown in full linsjinjsaid figure in- Fig. 3,pressure of-the h ndjis ali 'jlied to the frame sutficient'to o of the spring and make; he. V 'shaj d pjro jection ride out of the re I V bracket 3, and then whenthe'f a v r turned to the position shown in full" ines" Figs. 1 and 3 theother V shaiied 18101316 will engage the notch in thebigckethn 1 grinding wheels on oppositg gide plane of the cutting l thrown into. engagement" upon the turning oi th e crossipiece '1 cross piece the handle 1? is provided-extending from thehub thereof and the operator by grasping this handle can throw either wheelinto action and exert any desired pressure thereon. in order to hold the cross piece in neutral positionwith both of the grinding wheels out of ectionwe provide a collar 18 fixedto' the. shaft it), the said collar having a Vshaped notch in itslower face to he engaged by a V shaped point or projection 19 on the lower arm of the-frame 6. A spring 20 surrounding the,

ne w ll ts direction or the other. For so tin-111115; I 5

grinding wheels may be thrown entirely to one side of the knife, where they are held firmly in inoperatire position or the frame may be turned to carry the grinding wheels into neutral position with one on each side of the plane of the knife from which position either'may be thrown against the knife under any degree of pressure at the-Will of the operator by simply grasping the handleand turning the cross piece in relation to the swinging frame which is now held rigidly in position-by the look at 14:, 15. It will be observed that the grinding wheels are slightly tapered downwardly. When thrown against the knife they engage the upper portion thereof or that portion which lies above the horizontal center. .The position of these wheels and the angle at which they are driven by contact with the rotating. knife, provide a cutting edge peculiarly well adapted for the cutting of the cloth as the lines of grinding incline baclnvardly'in relation to the. direction of rotation and as a result of this the burred ragged or saw-like edge will not tend to pull the cloth into the throat plate together with find and waste which would result in clogging and inter-- fering with the proper running of the knife We claim as our invention 1. In apparatus of the class described,

pair of grinding wheels, a swinging support therefor by which either Wheel may be brought against the knife edge, said support being pivoted intermediate of its length and carrying the grinding wheels one on each side of said pivot and a pivotally mounted supporting frame to which the said swinging support is pivoted, said supporting frame being movable to throwthe grinding wheels entirely to one side of the knife, substantially as described. 2. In combination in apparatus of the class described, a fixed frame, a knife, a pivotally mounted supporting frame moV-' able toward and from the knife, locking means for holding the said frame in either of its positions to or from the knife 2 swing ing support on the pivotally. mounted frame and carrying grinding wheelsfto he one on each side of the knife, and locking means to hold said swinging support to the pivotally mounted frame, substantially as described.

8. In combination.- in apparatus of the class described, a fined frame, a knife, a pivotally mounted supporting frame, spring pressed locking means for holding said pivotally mounted supporting frame in either member mounted at the free end of the iv-' otally mounted supporting frame, grin ing wheels at opposite ends of the swlngmg member and the handle connected with the swinging member for throwing either grinding wheel into contact with the knife, substantially as described.

5. Incombination a fixed frame, a cutting knife, a pivotally mounted supporting frame a central connecting portion, a stud connecting the said frame at one end pivotally with the fixed frame, a swinging member, a stud composed of upper and lower portions and connecting the same pivotally with thefree end of the supporting frame, grinding wheels carried by the swinging member and locking means for the pivot-ally mounted supporting frame and the swinging member, substantially as described.

In testimony whereo'f, we afiix our slgnatures in presence of two witnesses.

FRANK Bl WILDMAN. EMANUEL WV. BORTMAN.

lVitnesses OWEN BALLARD, I. F. TEANY. 

